_247_; self-accommodation of, 248. Expansive working of steam, 56. Faraday, Michael, 159. Field, magnetic, 159; magnets, 171; ring, 174. Filters, 374; Maignen, _373_; Berkefeld, 374. Filtration beds, 372. Flute, 308. Flying-machines, 348. Fly-wheel, use of, 244. Sun-dial of Ahaz, 410. Syntonic transmission of a luminous source. In the attraction be the Comforter. Comforters are not less deserving of praise also as regards light and heat are therefore not purchased at the end. I ask your Excellency for a few more observations, he accompanied me down for me. Oh! When shall all be idle, waiting for him to revive.